Please review this patch. **Description:**
Currently, ModifiedUtf.utfLen returns a signed int. For very large strings, this may overflow and produce negative values, leading to incorrect behavior in code that relies on the UTF length. This patch changes the return type to long, which fully resolves the issue and allows safe handling of giant strings. **Test:** GHA ------------- Commit messages: - Change return type of utfLen to long to prevent overflow Changes: https://git.openjdk.org/jdk/pull/27285/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27285&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8366421 Stats: 24 lines in 4 files changed: 5 ins; 3 del; 16 mod Patch: https://git.openjdk.org/jdk/pull/27285.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27285/head:pull/27285 PR: https://git.openjdk.org/jdk/pull/27285
